And we also control for how much people living in one location spend time in other time zones, a measure of “connectedness” with people who operate on different clock time. What we find is that solar time does matter, but clock time matters more. So, changing the clock does change the time of most activities, but less than one for one. That’s important for understanding how electricity demand is likely to shift with clock changes, particularly in comparison to production from solar plants (which don’t care about our clock). Though one important caveat is that a biannual clock shift may have a different effect than a permanent one.

Source: Los Angeles Times March 06, 2023 23:31 UTC